Crankshaft engine lawnmower Briggs and StrattonFor models:092J0B093J02093J0B103M02104M02104M05104M0BDimensions:Ignition side shaft diameter: 22 mmEngine output shaft diameter: 22.2 mmCrankpin diameter: 25.4 mmIgnition side shaft length: 76 mmEngine output shaft length: 80 mm 70 on external outputOriginal Briggs and Stratton crankshaft.